Handley, Charles O. , Jr. 1959. A revision of American bats of the genera 

 Euderma and Plecotus . Proc . U.S. Natl. Mus. 110:95-246. 



Rippy, Charles L. , and Michael J. Harvey. 1965. Notes on Plecotus townsendii 

 virginianus in Kentucky. Jour. Mamm. 46(3): 499. 



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